532781789 has 4 divisors (see below), whose sum is σ = 540733824. Its totient is φ = 524829756.

The previous prime is 532781773. The next prime is 532781803. The reversal of 532781789 is 987187235.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 987187235 = 5 ⋅197437447.

It is a cyclic number.

It is not a de Polignac number, because 532781789 - 2⁴ = 532781773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (532781719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3975917 + ... + 3976050.

It is an arithmetic number, because the mean of its divisors is an integer number (135183456).

Almost surely, 2^532781789 is an apocalyptic number.

It is an amenable number.

532781789 is a deficient number, since it is larger than the sum of its proper divisors (7952035).

532781789 is an equidigital number, since it uses as much as digits as its factorization.

532781789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7952034.

The product of its digits is 846720, while the sum is 50.

The square root of 532781789 is about 23082.0663936312. The cubic root of 532781789 is about 810.6806193187.

The spelling of 532781789 in words is "five hundred thirty-two million, seven hundred eighty-one thousand, seven hundred eighty-nine".